68 lines
2.5 KiB
C
68 lines
2.5 KiB
C
/* $NetBSD: stddef.h,v 1.16 2009/11/15 22:21:03 christos Exp $ */
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/*-
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)stddef.h 8.1 (Berkeley) 6/2/93
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*/
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#ifndef _STDDEF_H_
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#define _STDDEF_H_
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#include <sys/cdefs.h>
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#include <sys/featuretest.h>
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#include <machine/ansi.h>
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typedef _BSD_PTRDIFF_T_ ptrdiff_t;
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#ifdef _BSD_SIZE_T_
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typedef _BSD_SIZE_T_ size_t;
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#undef _BSD_SIZE_T_
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#endif
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#if defined(_BSD_WCHAR_T_) && !defined(__cplusplus)
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typedef _BSD_WCHAR_T_ wchar_t;
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#undef _BSD_WCHAR_T_
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#endif
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#include <sys/null.h>
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#if __GNUC_PREREQ__(4, 0)
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#define offsetof(type, member) __builtin_offsetof(type, member)
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#elif !defined(__cplusplus)
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#define offsetof(type, member) ((size_t)(unsigned long)(&((type *)0)->member))
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#else
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#if !__GNUC_PREREQ__(3, 4)
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#define __offsetof__(a) a
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#endif
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#define offsetof(type, member) __offsetof__((reinterpret_cast<size_t> \
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(&reinterpret_cast<const volatile char &>(static_cast<type *>(0)->member))))
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#endif
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#endif /* _STDDEF_H_ */
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